EPA Air · stack tests by year
Air-emissions stack tests in 2024
- 39,252Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
States, 2024
- California 18,905
- Ohio 2,721
- Oklahoma 1,804
- Indiana 1,704
- New Mexico 1,428
- Florida 1,427
- Wyoming 1,285
- Georgia 1,104
- Pennsylvania 905
- Alabama 721
- Arkansas 569
- Missouri 539
- Iowa 464
- Mississippi 437
- Colorado 400
- Washington 338
- Texas 271
- Wisconsin 269
- North Carolina 254
- Minnesota 250
- West Virginia 230
- South Carolina 223
- Kentucky 218
- Delaware 185
- Montana 180
- Michigan 159
- Virginia 159
- Alaska 158
- Utah 157
- Tennessee 155
- Nebraska 150
- North Dakota 138
- Arizona 126
- Connecticut 122
- New York 115
- Maine 114
- Louisiana 113
- Illinois 109
- Idaho 91
- Nevada 88
- Hawaii 67
- Kansas 64
- New Hampshire 61
- South Dakota 59
- Maryland 58
- Massachusetts 52
- Oregon 35
- Rhode Island 29
- District of Columbia 25
- New Jersey 8
- Puerto Rico 5
- Vermont 4
Other years
Air-emissions stack tests recorded in 2024
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2024-12-16 | GHOST RIDER NORTH SATELLITE AND GAS LIFT | JAL, Lea, NM | Pass | State |
| 2024-12-16 | HELIOS COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2024-12-16 | ASCENT RESOURCES - UTICA, LLC - CHC DUTTON (WHEELING) | FLUSHING, Belmont, OH | Pass | State |
| 2024-12-16 | ASCENT RESOURCES - UTICA, LLC - CHC DUTTON (WHEELING) | FLUSHING, Belmont, OH | Pass | State |
| 2024-12-16 | ASCENT RESOURCES - UTICA, LLC - CHC DUTTON (WHEELING) | FLUSHING, Belmont, OH | Pass | State |
| 2024-12-16 | ASCENT RESOURCES - BEACON CDZ HR | CADIZ, Harrison, OH | Pass | State |
| 2024-12-16 | ASCENT RESOURCES - BEACON CDZ HR | CADIZ, Harrison, OH | Pass | State |
| 2024-12-16 | ASCENT RESOURCES - BEACON CDZ HR | CADIZ, Harrison, OH | Pass | State |
| 2024-12-16 | CLEVELAND-CLIFFS STEEL CORPORATION — high-priority violation on file | MIDDLETOWN, Butler, OH | Pass | State |
| 2024-12-16 | PROCTER & GAMBLE MASON BUSINESS & INNOVATION CENTER | MASON, Warren, OH | Pass | State |
| 2024-12-16 | PROCTER & GAMBLE MASON BUSINESS & INNOVATION CENTER | MASON, Warren, OH | Pass | State |
| 2024-12-16 | PROCTER & GAMBLE MASON BUSINESS & INNOVATION CENTER | MASON, Warren, OH | Pass | State |
| 2024-12-16 | PROCTER & GAMBLE MASON BUSINESS & INNOVATION CENTER | MASON, Warren, OH | Pass | State |
| 2024-12-16 | PEOPLES ELECTRIC COOP / TARGA — high-priority violation on file | CENTRAHOMA, Coal, OK | Pass | State |
| 2024-12-16 | SUPERIOR MIDSTREAM LLC / BELMON GAS PLANT | TONKAWA, Kay, OK | Pass | State |
| 2024-12-16 | SUPERIOR MIDSTREAM LLC / BELMON GAS PLANT | TONKAWA, Kay, OK | Pass | State |
| 2024-12-16 | TALL OAK WOODFORD LLC / SOLERA COMPRESSOR FACILITY | MCALESTER, Pittsburg, OK | Pass | State |
| 2024-12-16 | TALL OAK WOODFORD LLC / SOLERA COMPRESSOR FACILITY | MCALESTER, Pittsburg, OK | Pass | State |
| 2024-12-16 | TALL OAK WOODFORD LLC / SOLERA COMPRESSOR FACILITY | MCALESTER, Pittsburg, OK | Pass | State |
| 2024-12-16 | CALPINE BETHLEHEM LLC/BETHLEHEM — high-priority violation on file | BETHLEHEM, Northampton, PA | Pass | State |
| 2024-12-16 | APOLLO RESOURCES LLC CLAWSON COMP STA/INDIANA — high-priority violation on file | BLAIRSVILLE, Indiana, PA | Pass | State |
| 2024-12-16 | DIVERSIFIED PROD MARCHAND COMP STA | INDIANA, Indiana, PA | Pass | State |
| 2024-12-16 | PA TURNPIKE COMM/AKH MAINT FAC | JEANNETTE, Westmoreland, PA | Pass | State |
| 2024-12-16 | WASATCH INTEGRATED WASTE MANAGEMENT | LAYTON, Davis, UT | Pass | State |
| 2024-12-16 | DOMINION ENERGY - VIRGINIA CITY HYBRID ENERGY CENTER | ST PAUL, Wise, VA | Pass | State |
| 2024-12-16 | WISCONSIN ELECTRIC POWER COMPANY, D/B/A | WATERTOWN, Jefferson, WI | N/A | State |
| 2024-12-16 | GUNDERSEN HEALTH SYSTEM | LA CROSSE, La Crosse, WI | Pass | State |
| 2024-12-15 | ST. ELIZABETHS WEST CAMPUS - GSA | WASHINGTON, District of Columbia, DC | Pass | State |
| 2024-12-15 | TAMPA ELECTRIC COMPANY (TEC) | GIBSONTON, Hillsborough, FL | Pass | State |
| 2024-12-15 | TAMPA ELECTRIC COMPANY (TEC) | GIBSONTON, Hillsborough, FL | Pass | State |
| 2024-12-14 | ST. ELIZABETHS WEST CAMPUS - GSA | WASHINGTON, District of Columbia, DC | Pass | State |
| 2024-12-14 | ST. ELIZABETHS WEST CAMPUS - GSA | WASHINGTON, District of Columbia, DC | Pass | State |
| 2024-12-14 | ST. ELIZABETHS WEST CAMPUS - GSA | WASHINGTON, District of Columbia, DC | Pass | State |
| 2024-12-14 | KRAFT HEINZ FOODS COMPANY | JACKSONVILLE, Duval, FL | Pass | State |
| 2024-12-14 | PACKAGING CORPORATION OF AMERICA — high-priority violation on file | WALLULA, Walla Walla, WA | Pass | State |
| 2024-12-13 | FIRST SOLAR, INC | TRINITY, Morgan, AL | Pass | State |
| 2024-12-13 | R.E.C. TRANSPORT, INC. | RUSSELLVILLE, Pope, AR | Pass | State |
| 2024-12-13 | PINTO VALLEY MINE | MIAMI, Gila, AZ | Pass | State |
| 2024-12-13 | MONTEREY REGIONAL WASTE MGMT DIST | MARINA, Monterey, CA | Pass | Local |
| 2024-12-13 | VICTOR VALLEY WASTEWATER RECLAMATION AUTHORITY | VICTORVILLE, San Bernardino, CA | Pass | Local |
| 2024-12-13 | VICTOR VALLEY WASTEWATER RECLAMATION AUTHORITY | VICTORVILLE, San Bernardino, CA | Pass | Local |
| 2024-12-13 | AIR PROD & CHEM INC | CARSON, Los Angeles, CA | Pass | Local |
| 2024-12-13 | LAKELAND ELECTRIC | LAKELAND, Polk, FL | Pass | State |
| 2024-12-13 | LAKELAND ELECTRIC | LAKELAND, Polk, FL | Pass | State |
| 2024-12-13 | LAKELAND ELECTRIC | LAKELAND, Polk, FL | Pass | State |
| 2024-12-13 | LAKELAND ELECTRIC | LAKELAND, Polk, FL | Pass | State |
| 2024-12-13 | LAKELAND ELECTRIC | LAKELAND, Polk, FL | Pass | State |
| 2024-12-13 | MAQUOKETA MUNICIPAL ELECTRIC UTILITY-N&S | MAQUOKETA (HISTORICAL), Jackson, IA | Pass | State |
| 2024-12-13 | MAQUOKETA MUNICIPAL ELECTRIC UTILITY-N&S | MAQUOKETA (HISTORICAL), Jackson, IA | Pass | State |
| 2024-12-13 | AHLSTROM FILTRATION LLC | MADISONVILLE, Hopkins, KY | Pass | State |
| 2024-12-13 | MAINSPRING ENERGY | WESTFIELD, Hampden, MA | Pass | State |
| 2024-12-13 | MBTA SOUTH BOSTON POWER | BOSTON, CITY OF, Suffolk, MA | Pass | State |
| 2024-12-13 | SAPPI NORTH AMERICA, INC. | SKOWHEGAN, Somerset, ME | Pass | State |
| 2024-12-13 | SAPPI NORTH AMERICA, INC. | SKOWHEGAN, Somerset, ME | Pass | State |
| 2024-12-13 | CLEVELAND-CLIFFS STEEL CORPORATION DEARBORN WORKS | DEARBORN, Wayne, MI | Pass | State |
| 2024-12-13 | DTE ST. CLAIR / BELLE RIVER POWER PLANT — high-priority violation on file | CHINA, St. Clair, MI | Pass | State |
| 2024-12-13 | STONECO OF MICHIGAN, INC. | MAYBEE, Monroe, MI | Pass | State |
| 2024-12-13 | MONTANA SULPHUR & CHEMICAL | BILLINGS, Yellowstone, MT | Pass | State |
| 2024-12-13 | DOGTOWN COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2024-12-13 | WALKER COMPRESSOR STATION | LOVING, Eddy, NM | Pass | State |
| 2024-12-13 | KILGORE COMPRESSOR STATION-UTICA GAS SERVICES, LLC | KILGORE, Carroll, OH | Pass | State |
| 2024-12-13 | KILGORE COMPRESSOR STATION-UTICA GAS SERVICES, LLC | KILGORE, Carroll, OH | Pass | State |
| 2024-12-13 | KILGORE COMPRESSOR STATION-UTICA GAS SERVICES, LLC | KILGORE, Carroll, OH | Pass | State |
| 2024-12-13 | NORTHSTAR BLUESCOPE STEEL, LLC | DELTA, Fulton, OH | Fail | State |
| 2024-12-13 | NORTHSTAR BLUESCOPE STEEL, LLC | DELTA, Fulton, OH | Fail | State |
| 2024-12-13 | NORTHSTAR BLUESCOPE STEEL, LLC | DELTA, Fulton, OH | Pass | State |
| 2024-12-13 | NORTHSTAR BLUESCOPE STEEL, LLC | DELTA, Fulton, OH | Pass | State |
| 2024-12-13 | NORTHSTAR BLUESCOPE STEEL, LLC | DELTA, Fulton, OH | Pass | State |
| 2024-12-13 | NORTHSTAR BLUESCOPE STEEL, LLC | DELTA, Fulton, OH | Pass | State |
| 2024-12-13 | NORTHSTAR BLUESCOPE STEEL, LLC | DELTA, Fulton, OH | Pass | State |
| 2024-12-13 | NORTHSTAR BLUESCOPE STEEL, LLC | DELTA, Fulton, OH | Pass | State |
| 2024-12-13 | NORTHSTAR BLUESCOPE STEEL, LLC | DELTA, Fulton, OH | Pass | State |
| 2024-12-13 | NORTHSTAR BLUESCOPE STEEL, LLC | DELTA, Fulton, OH | Pass | State |
| 2024-12-13 | NORTHSTAR BLUESCOPE STEEL, LLC | DELTA, Fulton, OH | Pass | State |
| 2024-12-13 | NORTHSTAR BLUESCOPE STEEL, LLC | DELTA, Fulton, OH | Pass | State |
| 2024-12-13 | EOG RESOURCES, INC. - SHUGERT GY CEN PAD | CAMBRIDGE, Guernsey, OH | Pass | State |
| 2024-12-13 | EOG RESOURCES, INC. - SHUGERT GY CEN PAD | CAMBRIDGE, Guernsey, OH | Pass | State |
| 2024-12-13 | EOG RESOURCES, INC. - SHUGERT GY CEN PAD | CAMBRIDGE, Guernsey, OH | Pass | State |
| 2024-12-13 | DEVON ENERGY PRODUCTION CO LP / RHINO 17 PAD 2 | OKARCHE, Canadian, OK | Pass | State |
| 2024-12-13 | GULFPORT MIDCON LLC / OLIVE 1 33 | ALEX, Grady, OK | Pass | State |
| 2024-12-13 | TEXAS EASTERN TRANS LP/ENTRIKEN STA | ENTRIKEN, Huntingdon, PA | Pass | State |
| 2024-12-13 | TEXAS EASTERN TRANS LP/ENTRIKEN STA | ENTRIKEN, Huntingdon, PA | Pass | State |
| 2024-12-13 | MILLER & SONS, INC | ONEIDA, Scott, TN | Pass | State |
| 2024-12-13 | ULTIUM CELLS LLC | CITY OF SPRING HILL, Maury, TN | Pass | State |
| 2024-12-13 | DARAB VENTURES ONE, TWO, SIX LLC | ASHBURN, Loudoun, VA | Pass | State |
| 2024-12-13 | ANTERO MIDSTREAM LLC, MOUNTAIN STATION | PENNSBORO, Tyler, WV | Pass | State |
| 2024-12-12 | GOLDEN VALLEY ELECTRIC ASSOCIATION / HEALY POWER PLANT — high-priority violation on file | HEALY, Denali, AK | Pass | State |
| 2024-12-12 | GP CELLULOSE ALABAMA RIVER CELLULOSE LLC | PERDUE HILL, Monroe, AL | Pass | State |
| 2024-12-12 | INTERNATIONAL PAPER | PINE HILL, Wilcox, AL | Pass | State |
| 2024-12-12 | INTERNATIONAL PAPER | PINE HILL, Wilcox, AL | Pass | State |
| 2024-12-12 | INTERNATIONAL PAPER | PINE HILL, Wilcox, AL | Pass | State |
| 2024-12-12 | GEORGIA-PACIFIC WOOD PRODUCTS LLC | GURDON, Clark, AR | Pass | State |
| 2024-12-12 | GEORGIA-PACIFIC WOOD PRODUCTS LLC | GURDON, Clark, AR | Pass | State |
| 2024-12-12 | DESOTO GATHERING COMPANY, LLC. - PUMA CPF-1 | HEBER SPRINGS, Cleburne, AR | Pass | State |
| 2024-12-12 | DESOTO GATHERING COMPANY, LLC. - PUMA CPF-1 | HEBER SPRINGS, Cleburne, AR | Pass | State |
| 2024-12-12 | DOMTAR A.W. LLC - ASHDOWN MILL — high-priority violation on file | ASHDOWN, Little River, AR | Pass | State |
| 2024-12-12 | LANXESS CORPORATION-SOUTH PLANT | EL DORADO, Union, AR | Pass | State |
| 2024-12-12 | AERA ENERGY LLC | SAN ARDO, Monterey, CA | Pass | Local |
| 2024-12-12 | AERA ENERGY LLC | SAN ARDO, Monterey, CA | Pass | Local |
| 2024-12-12 | HARBOR COGENERATION CO, LLC | WILMINGTON, Los Angeles, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.
What this page shows
This page covers Clean Air Act facilities in the EPA air register and their 2024 stack tests. Nationwide, 39,252 stack tests were recorded in 2024.